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  1. Humans

    From the September 29, 1934, issue

    Structural details of chromosomes, America's Cup yacht technology, and an improved street car.

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  2. Humans

    Skeptical Brains

    At the Web site of the McDonnell Foundation, a private funder of scientific research, peruse examples of recent media misinterpretations of brain studies—as chosen by foundation staffers—at a page titled “BAD Neuro-Journalism.” Go to: http://www.jsmf.org/about/s/badneuro/index.htm

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  3. Pinpointing Poachers: Gene sleuths map illicit elephant kills

    A new, genetics-based technique for determining ivory's place of origin is geographically precise enough to aid forensic pursuit of African elephant poachers.

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  4. Two-Headed Memories: Collaboration gives recall lift to elderly

    Collaboration with a spouse improves the accuracy of older people's memories on tasks such as remembering items on a shopping list or identifying familiar landmarks on a local map.